Add events log, active_dispatch tracking, and galleyProgress to gameState

src/gameState.js

@@ -37,7 +37,52 @@ export function isRouteUnlocked(state, routeId) {
   return state.den >= r.unlock_den && state.aut >= r.unlock_aut
 }
 
-// Apply a completed dispatch — returns new state
+// Returns a 0–1 progress float for a dispatched galley along its route.
+// 0 = just departed, 1 = returned. Returns null if no active dispatch.
+// This function is pure — it takes a snapshot of active_dispatch and a
+// current timestamp. OTIVM-IV will feed real duration_ms values.
+// OTIVM-VII will map the progress float onto H3 waypoints along the route.
+export function galleyProgress(active_dispatch, now_ms) {
+  if (!active_dispatch) return null
+  const { started_utc, duration_ms } = active_dispatch
+  const elapsed = now_ms - new Date(started_utc).getTime()
+  return Math.min(elapsed / duration_ms, 1)
+}
+
+// Append an event to state — returns new state.
+// Internal helper used by apply* functions below.
+function appendEvent(state, type, route_id = null) {
+  const event = {
+    type,
+    route_id,
+    timestamp_utc: new Date().toISOString(),
+  }
+  return {
+    ...state,
+    events: [...(state.events || []), event],
+  }
+}
+
+// Apply cost of launching a dispatch — returns new state or null if insufficient funds.
+// Sets active_dispatch so galleyProgress can track position.
+export function applyDispatchCost(state, routeId) {
+  const r = ROUTES.find((x) => x.id === routeId)
+  if (!r) return null
+  if (state.den < r.cost) return null
+  const withCost = { ...state, den: state.den - r.cost }
+  const withDispatch = {
+    ...withCost,
+    active_dispatch: {
+      route_id: routeId,
+      started_utc: new Date().toISOString(),
+      duration_ms: r.duration_ms,
+    },
+  }
+  return appendEvent(withDispatch, 'dispatch_start', routeId)
+}
+
+// Apply a completed dispatch — returns new state.
+// Clears active_dispatch on completion.
 export function applyDispatch(state, routeId) {
   const r = ROUTES.find((x) => x.id === routeId)
   if (!r) return state
@@ -49,6 +94,7 @@ export function applyDispatch(state, routeId) {
 
   const den = state.den + r.profit
   const dispatches = state.dispatches + 1
+  const prevChapter = state.chapter
   const chapter = getChapter(den, state.aut)
 
   // Check for new journal entry
@@ -59,22 +105,21 @@ export function applyDispatch(state, routeId) {
     ? [...state.journal_seen, { routeId, dispatch: dispatchCount }]
     : state.journal_seen
 
-  return {
+  let next = {
     ...state,
     den,
     dispatches,
     chapter,
     route_dispatches,
     journal_seen,
+    active_dispatch: null,
   }
-}
 
-// Apply cost of launching a dispatch — returns new state or null if insufficient funds
-export function applyDispatchCost(state, routeId) {
-  const r = ROUTES.find((x) => x.id === routeId)
-  if (!r) return null
-  if (state.den < r.cost) return null
-  return { ...state, den: state.den - r.cost }
+  next = appendEvent(next, 'dispatch_complete', routeId)
+  if (entry) next = appendEvent(next, 'journal_unlock', routeId)
+  if (chapter > prevChapter) next = appendEvent(next, 'chapter_advance', null)
+
+  return next
 }
 
 // Apply completed otium — returns new state
@@ -82,7 +127,8 @@ export function applyOtium(state) {
   const gain = OTIUM_BASE_AUT + Math.floor(state.dispatches / 3)
   const aut = state.aut + gain
   const chapter = getChapter(state.den, aut)
-  return { ...state, aut, chapter }
+  const next = { ...state, aut, chapter }
+  return appendEvent(next, 'otium', null)
 }
 
 // Returns the journal entry to show for a completed dispatch, or null